International (Navistar)
J1939 SPN/FMI
SPN 3226 / FMI 13
International Fault Code SPN 3226 FMI 13: Aftertreatment 1 Outlet NOx 1: Out Of Calibration
SPN 3226 FMI 13 on International / Navistar trucks means: Aftertreatment 1 Outlet NOx 1: Out Of Calibration. The failure mode (FMI 13) is “out of calibration”.
Code details
- Manufacturer
- International (Navistar)
- Applies to
- International A26 (2024–2025)
- Fault code
- SPN 3226 FMI 13
- J1939 SPN
- 3226
- FMI
- 13 — Out of calibration
- Truck models in source
- 3200, 4100, 4300, 4400, 7300, 7400, 7500, 7600, 7700, 8500, 8600, BE 200, CE Bus, CXT, DuraStar, LoneStar, MXT, ProStar, RXT, TranStar, WorkStar
What to do next
- Read active and inactive codes with the OEM service tool (Diamond Logic Builder can clear previously active codes) and note the occurrence count.
- FMI 13 tells the shop the type of failure to test for: out of calibration.
- Have a heavy-duty diesel technician confirm the fault against the engine or chassis service manual before replacing parts.
Get this code diagnosed
Send one request and nearby diesel shops and mobile mechanics can quote the repair.
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Related fault codes
- International Fault Code SPN 3226 FMI 10 — Aftertreatment 1 Outlet NOx 1: Abnormal Rate Of Change
- International Fault Code SPN 3226 FMI 11 — Aftertreatment 1 Outlet NOx 1: Root Cause Not Known
- International Fault Code SPN 3226 FMI 16 — Aftertreatment 1 Outlet NOx 1 – Data Valid But Above Normal Operating Range – Moderately Severe Level
- International Fault Code SPN 3226 FMI 18 — Aftertreatment 1 Outlet NOx 1: Data Valid But Below Normal Operating Range – Moderately Severe Level
- International Fault Code SPN 3226 FMI 2 — Aftertreatment 1 Outlet NOx 1: Data Erratic, Intermittent Or Incorrect
- International Fault Code SPN 3226 FMI 4 — Aftertreatment 1 Outlet NOx 1: Voltage Below Normal, Or Shorted To Low Source
- International Fault Code SPN 3226 FMI 9 — Aftertreatment 1 Outlet NOx 1: Abnormal Update Rate
- PACCAR Fault Code P3873 — CAN Communication – Message (AT1IOGC1) Time-Out From NOx Sensor After Catalyst
Source: International A26 2024–2025 fault code list (Diesel Laptops). See also OBD-II codes.